Hex #664c77 or rgb(102,76,119) in RGB space is the tint of purple. It has hue angle of 276.28 degrees, value = 47 and saturation = 36. #664c77 can be obtained by mixing 3 colors: 2 drops of red, 2 drops of blue, 1 drop of cyan.
Nearest safe hex - #663366. Below you can see the block with #664c77 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #664c77 to the mixer and play with it.